Prosecution Insights
Last updated: April 17, 2026
Application No. 17/220,878

Cancer Treatment And Imaging Methods Using Thermotherapy And Drug Delivery

Final Rejection §103
Filed
Apr 01, 2021
Examiner
BURKHART, MICHAEL D
Art Unit
1638
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
unknown
OA Round
2 (Final)
62%
Grant Probability
Moderate
3-4
OA Rounds
3y 3m
To Grant
72%
With Interview

Examiner Intelligence

Grants 62% of resolved cases
62%
Career Allow Rate
507 granted / 811 resolved
+2.5% vs TC avg
Moderate +10% lift
Without
With
+9.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
45 currently pending
Career history
856
Total Applications
across all art units

Statute-Specific Performance

§101
3.8%
-36.2% vs TC avg
§103
27.5%
-12.5% vs TC avg
§102
21.0%
-19.0% vs TC avg
§112
25.2%
-14.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 811 resolved cases

Office Action

§103
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Receipt and entry of the response dated 10/10/2025 is acknowledged. Priority Applicant’s claim for the benefit of a prior-filed application under 35 U.S.C. 119(e) or under 35 U.S.C. 120, 121, 365(c), or 386(c) is acknowledged. Applicant has not complied with one or more conditions for receiving the benefit of an earlier filing date under 35 U.S.C. 120 as follows: The later-filed application must be an application for a patent for an invention which is also disclosed in the prior application (the parent or original nonprovisional application or provisional application). The disclosure of the invention in the parent application and in the later-filed application must be sufficient to comply with the requirements of 35 U.S.C. 112(a) or the first paragraph of pre-AIA 35 U.S.C. 112, except for the best mode requirement. See Transco Products, Inc. v. Performance Contracting, Inc., 38 F.3d 551, 32 USPQ2d 1077 (Fed. Cir. 1994). The disclosure of the prior-filed applications, Application Nos. 14/976,321; 15/143,981; 15/853,821 and 16/004,401 fail to provide adequate support or enablement in the manner provided by 35 U.S.C. 112(a) or pre-AIA 35 U.S.C. 112, first paragraph for one or more claims of this application. The parent applications do not support at least the following features recited by claim 1: treating and imaging using “compressive non-thermal low power focused ultrasound” and “exciting the … nanoparticles … in a first compressive, non-thermal, low power focused mode using an ultrasound source [...] so as to peel off the polymer coating of the nanoparticles … by the focused vibration of the ultrasonic wave, thereby releasing the dye or indicator into the circulation of the patient.” Therefore, the earliest priority date to which instant claims 1-4, 8, 9, 11-13 are entitled is 26 October 2017, which is the earliest provisional application supporting the claimed combination under examination (provisional App. No. 62/577,485). While this is linked via PCT/US2018/054880, to which the instant application also relates as continuation-in-part, the claimed subject matter is equally supported in at least the claims of the PCT. Terminal Disclaimer The terminal disclaimer filed on 10/10/2025 and disclaiming the terminal portion of any patent granted on this application which would extend beyond the expiration date of US 11,433,260 and US 11,090,385 has been reviewed and is accepted. The terminal disclaimer has been recorded. Claim Rejections - 35 USC § 103 The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claims 1, 8, 9, 11-14 are rejected under 35 U.S.C. 103 as being unpatentable over Peyman (US 2016/0022976, of record) in view of Jin et al. (US 2010/0303716, of record). Claim 2 is rejected under 35 U.S.C. 103 as being unpatentable over Peyman in view of Jin et al., as applied to claim 1, and further in view of Xin et al. (Transl Androl Urol. 2016 Apr; of record). These rejections are maintained for reasons made of record in the Office Action dated 5/19/2025 and for reasons set forth below. Claim 1 has been amended to include the limitations of claim 3, previously included in this rejection. Response to Arguments Applicant's arguments filed 10/20/2025 have been fully considered but they are not persuasive. Applicants essentially assert that the amendments to claim 1 are not taught by Peyman and Jin et al. Such is not convincing. Peyman the ultrasound operational parameters in cited ¶[0099]-[0100], the claimed effects of damaging tumor cell membranes with temperature increases in ¶ [0051] and the melting effect of the polymer coating in ¶ [0216]. Jin et al teach alternating heating with vibration in ¶’s [0076]-[0077]. Peyman and Jin et al teach ultrasonic frequency ranges which overlap with the range claimed in claim 4 that achieves the heating effect. See at least Peyman at ¶ [0201] and Jin at ¶ [0084]. The claim limitation of “…so as to avoid damaging normal tissue of the patient…” is not a specific, active method step but an intended result. It is considered that practicing the ultrasound methods of Peyman and Jin et al would achieve this same result inherently as the method steps are the same. Claim 4 is rejected under 35 U.S.C. 103 as being unpatentable over Peyman in view of Jin et al., as applied to claim 1, as evidenced by Kruse et al. (IEEE Trans Biomed Eng. 2010 Jan; of record). This rejection is maintained for reasons made of record in the Office Action dated 5/19/2025 and for reasons set forth below. Response to Arguments Applicant's arguments filed 10/20/2025 have been fully considered but they are not persuasive. Applicants essentially assert that the passages cited from Kruse et al is insufficient to teach the claimed power range. Such is not convincing. The rejection does not rely on Kruse alone, as Peyman and Jin et al teach ultrasound frequencies which overlap with the thermal frequencies claimed. See at least Peyman at ¶[0201] and Jin at ¶[0084]. Combined with the teachings of Kruse et al of average power delivered over an area is predictive of the heating, suggesting to those skilled in the art that the average power of ultrasound delivered for the disclosed targeted temperature in Peyman would necessarily require operating the ultrasound transducer(s) at a power on the order of the range claimed. Conclusion THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Michael Burkhart whose telephone number is (571)272-2915. The examiner can normally be reached M-F 8-5. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Tracy Vivlemore can be reached at 571 272-2914. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /MICHAEL D BURKHART/Primary Examiner, Art Unit 1638
Read full office action

Prosecution Timeline

Apr 01, 2021
Application Filed
May 17, 2025
Non-Final Rejection — §103
Oct 20, 2025
Response Filed
Oct 22, 2025
Interview Requested
Oct 28, 2025
Applicant Interview (Telephonic)
Nov 01, 2025
Examiner Interview Summary
Jan 24, 2026
Final Rejection — §103 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
62%
Grant Probability
72%
With Interview (+9.9%)
3y 3m
Median Time to Grant
Moderate
PTA Risk
Based on 811 resolved cases by this examiner. Grant probability derived from career allow rate.

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